Every electrical appliance you use, whether powered by batteries or plugged into a power point, converts electrical energy into other forms of energy. Most of that energy is usually converted into useful energy — but some is converted into forms of energy that are wasted or not so useful. But all of the electrical energy is converted — that’s the Law of Conservation of Energy in action. Not of the wasted energy is actually lost. Here are some examples:

Microwave - used to create thermal energy for food but can be wasted by heating air in the oven.
Television - used to create light and sound but wastes some of its energy heating the air surrounding it.
Hair dryer - this is used to create thermal and kinetic energy but also produces sound energy
Electric cooktop - used to create thermal energy for food but also produces light and heat energy.

	Created by Oyedele Oluwaseun about 4 years ago

Year 8 Science Slide Set on 10.2 study slide, created by Oyedele Oluwaseun on 02/11/2020.

10.2 study slide